# Argon2 utils

## About

Utils to encrypt passwords using argon2

## Install

Download package in your project module:

````bash
go get -u euphoria-laxis.fr/go-packages/argon2
````

## Usages

### Hash password

````go
package main

import (
	"fmt"

    "euphoria-laxis.fr/go-packages/argon2/encoder"
)

func main() {
    password := "qwerty@123"
    // Create new encoder using default options
    encode, _ := encoder.NewEncoder()
    hashedString, err := encode.HashString(password)
    if err != nil {
		panic(err)
    }
	fmt.Println(hashedString)
}
````

### Compare password with hashed string

````go
package main

import (
	"fmt"
	
	"euphoria-laxis.fr/go-packages/argon2/encoder"
	"euphoria-laxis.fr/go-packages/argon2/decoder"
)

func main() {
	password := "qwerty@123"
	// Create new encoder using default options
	enc, _ := encoder.NewEncoder()
	hashedString, err := enc.HashString(password)
	if err != nil {
		panic(err)
	}
	fmt.Println(hashedString)
	// Create new decoder using default options
	dec := decoder.NewDecoder()
	var match bool
	match, err = dec.CompareStringToHash(password, hashedString)
	if err != nil {
		panic(err)
	}
	if !match {
		fmt.Println("wrong password")
    }
}
````

### Configure encoder or decoder options

Note that encoder and decoder inherited from the same base struct *(argon2.Options)*.
You can use the same `argon2.OptFunc` slice to configure both encoder and decoder.

````go
    // Create new encoder using custom parameters
    enc, options := encoder.NewEncoder(
        SetMemory(64 * 1024), // 64 bits
        SetParallelism(4),    // 4 concurrent actions
        SetKeyLength(32),     // key length
        SetSaltLength(32),    // salt length
        SetIterations(4),     // number of iterations
    )
	// Decoder use the same functions
````

## Contributions

**Euphoria Laxis** [Gitea](https://euphoria-laxis.fr/euphoria-laxis)

## License

This project is under [MIT License](./LICENSE)